Answer: $0.3
Step-by-step explanation:
Given
The owner buys 144 pens for $28.80 i.e. each pen costs

owner sells the pen at $0.4 i.e. price marked up by

So, the claim of the owner is incorrect
The actual increase in the price to get 50% markup

Answer:
B
Step-by-step explanation:
X= 55 degrees ...........
Answer:
3
Step-by-step explanation:
Hope this helps. :) :D